dev.augments/mcp

# Add the MCP server (runs locally via npx)
claude mcp add -s user augments -- npx -y @augmnt-sh/augments-mcp-server

# Verify configuration
claude mcp list

{
  "mcpServers": {
    "augments": {
      "command": "npx",
      "args": ["-y", "@augmnt-sh/augments-mcp-server"]
    }
  }
}

{
  "mcpServers": {
    "augments": {
      "command": "npx",
      "args": ["-y", "@augmnt-sh/augments-mcp-server"],
      "env": {
        "GITHUB_TOKEN": "ghp_your_token_here"
      }
    }
  }
}

# Get API context with prose + examples (recommended first tool)
@augments get_api_context query="useEffect cleanup" framework="react"

# Natural language queries work great
@augments get_api_context query="how to use zustand middleware"

# Search for APIs by concept (synonym-aware)
@augments search_apis query="state management"

# Get version info with real breaking changes
@augments get_version_info framework="react" fromVersion="18" toVersion="19"

# Migration guide between versions
@augments get_migration_guide package="next" fromVersion="14" toVersion="15"

# Diagnose an error
@augments diagnose_error error="Objects are not valid as a React child" package="react"

# Compare packages side-by-side
@augments compare_packages packages=["zod", "yup", "joi"]

# Scan project dependencies
@augments scan_project_deps

flowchart TD
    A["Query: 'how to use useEffect cleanup'"] --> B

    B["Intent Detection → howto<br/>Query Parser → react / useEffect"]

    B --> C["Type Fetcher<br/>CDN racing · npm metadata · @types"]
    B --> D["Doc Fetcher<br/>GitHub API · BM25 search · 25 synonym clusters"]
    B --> E["Example Extractor<br/>GitHub docs · README fallback · Auto-discovery"]

    C --> F["Type Parser<br/>Signatures · Parameters · Related types"]
    D --> G["Doc Search Engine<br/>BM25 indexing · Heading-based chunks · API boost"]

    F --> H["Intent-Driven Formatter (howto)<br/>→ Examples first, prose, brief signature<br/>→ ~500-2000 tokens, 10KB max"]
    G --> H
    E --> H

src/
├── cli.ts                   # stdio entry point
├── server.ts                # MCP server (8 tools + diagnostics)
├── core/                    # Core modules
│   ├── query-parser.ts      # Parse natural language → framework + concept
│   ├── type-fetcher.ts      # Fetch .d.ts + README from npm/unpkg/jsdelivr
│   ├── type-parser.ts       # Parse TypeScript, extract signatures, synonym search
│   ├── example-extractor.ts # Fetch examples from GitHub docs + auto-discovery
│   ├── version-registry.ts  # npm registry integration + changelog-backed diffs
│   ├── doc-fetcher.ts       # GitHub documentation fetcher
│   ├── doc-search.ts        # BM25 inverted index search engine
│   ├── changelog-fetcher.ts # CHANGELOG.md + GitHub Releases parser
│   ├── type-differ.ts       # .d.ts diff between versions
│   └── error-patterns.ts    # Curated error pattern database
├── tools/v4/                # MCP tools
│   ├── get-api-context.ts   # Primary tool (types + docs + examples)
│   ├── search-apis.ts       # Cross-framework API search
│   ├── get-version-info.ts  # Version comparison
│   ├── get-migration-guide.ts # Cross-version migration guides
│   ├── diagnose-error.ts    # Error diagnosis
│   ├── compare-packages.ts  # Package comparison
│   └── scan-project-deps.ts # Dependency scanner
└── utils/
    ├── logger.ts            # stderr logger
    └── lru-cache.ts         # Generic LRU cache with stats

# Clone and install
git clone https://github.com/augmentscode/augments-mcp-server.git
cd augments-mcp-server
npm install

# Build with tsup
npm run build

# Run locally
npm start

# Watch mode
npm run dev

# Run tests
npm test

# Run e2e tests (real network calls)
npm run test:e2e

# Type check
npm run type-check